连接数据库报错：ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

报错：

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

1、楼主是新安装的mysql，注意新安装完成不会默认启动服务

2、百度上各种处理办法均不对，查看数据库状态发现未启动！！！

3、重启把服务拉起即可成功连接：systemctl start mariadb.service 

4、安装新服务后一定要先检查服务的状态信息，再去判断报错！！！